body, ul, li {
    padding: 0;
    margin: 0;
}
body {
    height: auto;
    padding-bottom: 60px;
    font: 14px/1.5 "Helvetica Neue", Helvetica;
    /*background-color: #212121;*/
}
ul {
    list-style-type: none;/*去掉项目符号*/

}
a {
    text-decoration: none;/*去掉下划线*/
}